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TtlLruStore

Struct TtlLruStore 

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pub struct TtlLruStore<T> { /* private fields */ }
Expand description

线程安全的 TTL + LRU 两级淘汰缓存存储。 同时支持多读或单写并发访问。

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impl<T: Expired + Clone> TtlLruStore<T>

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pub fn new(size: NonZeroUsize) -> Self

创建指定容量的 TtlLruStore,容量必须大于 0。

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pub async fn set(&self, key: &str, value: T)

向缓存写入键值对。容量已满时自动淘汰最久未使用的条目。

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pub async fn get(&self, key: &str) -> Option<T>

读取未过期的缓存值,键不存在或已过期时返回 None。 内部使用 peek 而非 get,不更新 LRU 顺序,性能更优。

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pub async fn del(&self, key: &str)

删除指定键,键不存在时为空操作。

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pub async fn purge_expired(&self)

清除所有已过期的条目,应定期调用以释放内存。

Auto Trait Implementations§

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impl<T> !Freeze for TtlLruStore<T>

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impl<T> !RefUnwindSafe for TtlLruStore<T>

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impl<T> Send for TtlLruStore<T>
where T: Send,

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impl<T> Sync for TtlLruStore<T>
where T: Send + Sync,

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impl<T> Unpin for TtlLruStore<T>

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impl<T> UnsafeUnpin for TtlLruStore<T>

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impl<T> UnwindSafe for TtlLruStore<T>
where T: RefUnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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fn instrument(self, span: Span) -> Instrumented<Self>

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where U: From<T>,

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type Error = <U as TryFrom<T>>::Error

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

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impl<A, B, T> HttpServerConnExec<A, B> for T
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